Rail-drilling machine.



W. C. DIER.

RAIL DRILLING MACHINE.

APPLICATION FILED JULY 18. IIIIII.

?atented Apr. 3, 191?.

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W. C. DYER. RAIL DRILLING MACHINE. APPLICATION FILED JULY 18. IQIB.

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WALTER C. DYER, OF CHICAGO, ILLINOIS, ASSIGNOIR TO BUDA COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BAIL-DRILLING MACHINE.

Specification of Letters Patent.

PatentedApr. a, ram.

Application filed July 18, 1916. Serial No. 109,894.

To all whom it may concern: Be it known that I, VALTER G. DYER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Rail-Drilling Machines, ofwhich the following is a full, clear,

and exact specification, such as will enable others to make and use the same, reference being had to the accompanying drawings, forming a part hereof. V

This invention relates in general to drilling' apparatus, and is in the nature of an improvement upon that type of drill adapted for drilling bond wire or other holes in railroad rails, such as that described and set forth in United States Letters Patent to Place and Jenkins, #1,175,556. of March 14th, 1916. My invention has for one of its objects the provision in a drill of this type of a novel device designed for clamping the drill directly to the rail and wherein the device serves to support the drill in an operative drilling position against the rail, independently of the ground.

My invention has for its. further objects to improve the. construction, and increase the efficiency and utility of devices of this character; to provide means whereby the drill may be quickly and readily clamped to and disengaged from the rail; and to provide a construction of clamping devices wherein the operating member thereof is conveniently accessible to the operator of the drill.

These, together with such other objects as may hereinafter appear, or are incident to my invention, I attain by means of the construction illustrated in preferred form in the accompanying drawings, wherein Figure 1 represents a vertical sectional view of a drill embodying my rail clamping and drill supporting device, showing the device in operative drillingposition;

Fig. 2 is a view showing a top plan of the device positioned as inFig. 1.

Fig. 3 represents an enlarged view 1n perspective of said device, Fig. 4 being a Slmllar view of the inner rail clamping member of said device; and j Fig. 5 is a section taken along the line 55 of Fig. 2.

Referring to the drawings, the letter A designates a drill of the type described in the aforementioned Letters Patent .#1,175,556,

said drill embodying a base frame 6 in which the spindle'8 with its bit 9 is mounted for longitudinal rotative movement with reference to the rail 13, and an upper frame portion 10 extending upwardly. from said base in which, the crank shaft' 11 and crank 12 are carried, the former being operatively connected with the spindle 8- by drive chains 14 and 15. Suffice to say that on actuation of the crank, the spindle and its bit have rotative and longitudinal movement with reference to the work. This stated construction presents nothing but that which is already well known in the art, and may be departed from in any manner considered desirable. For the sake of clarity only a brief description of the drillproper is here given, particularly inasmuch as a detailed specification of the parts is set forth in the aforementioned Letters Patent.

My invention resides-in the rail clamping and drill supporting device designated as a whole in Fig. 1 by the letter B. This device embodies complementary side frame members 16 having rearwardly extending arms 17 received in side portions 7 of the base-6 and rigidly secured thereto by the set screws 18. Each side frame member 16 is also provided with a central body portion or box 19 formed with an elongated rectangular slot 20, and an arm 21" extending forwardly from the upper part of the front portion 19 of said box 19 to rest upon the head 13 of the rail and then bent downwardly to provide a terminal mounting 22. Upon the terminal mounting is carried, for vertical adjustment therealong, a clamping dog 23 provided with an. inner face adapted to engage the outer face of the rail head and formed with an abutment 23 designed to grip the under portion of said outer face, as in the manner more clearly shown in Fig. 1 of the drawmgs.

Means cooperating with the foregoing are also provided for gripping'the opposite side portion of the rail head to attain the drill support and clamping efiect desired. With this in view, I provide inner clamping dogs 24: integrally depending from a shaft 25, each of said dogs formed with a concaved end 2% and a rear cam face 24:. The shaft has its ends 25 pivotally mounted in the upper forward portions of the boxes 19 permitting outward movement of its dogs so that the concaved ends of the same may engage the opposite side of the rail head to that engaged by the dogs 23. It will be noted that the box 19 has its outer face 19 spaced sufliciently apart from the dogs 23 so as to readily permit the positioning of the device over the rail head. Stay arms 26 connect the inner portions of the box to the up erframe 10 and cooperate with the arms 1 to produce a sufficiently rigid struc ture.

In order to actuate the dogs 24, eccentric or cam members 27 are disposed rearwardly thereof and adapted to effect a camming action against the cam faces 24', said members 27 being carried by a shaft 28 whose ends are journaled in flanged blocks 29, which latter in turn are slidably received in the elongated slots 20 provided in the side frame boxes. One end 28 of the shaft 28 extends through the block, upon which end the clamping lever 30 is mounted and secured thereto by the nut 31.

The numeral 32 designates a hole formed in the rear portion of each box to extend into the slot 20 at the rear of the block. This hole is threaded to receive an adjusting screw 38, by means of which the position of the block may be adjusted horizontally in the slot, to meet varying conditions of use, whereupon on depression of the lever 30 engagement between the high points of the co-acting eccentries and cam-faces is effected, whereby the clamping dogs are maintained in position against the rail during the operationof the drill.

In the drilling operation, the bit 9 is retracted by reverse actuation of the crank 12 and the dogs 24 are depressed by raising the lever '30, permitting manipulation of the device B to straddle the rail head and thus bring the dogs 23 in theirgripping position against its outer face. By depressing the lever 30,'the dogs 24 engage the inner and under faces of the rail head with their gripping portions 24 through the camming action of the eccentrics which bear against their rear faces. In this way the drill is securely clamped to the rail and at the same 8 time is supported therefrom. To disengage 0 the drill, all that is required is to retract the bit and raise the lever.

What I claim is 1. The combination with the drill carrying base of a rail drilling machine, of a frame extending forwardly of said base whereby to straddle the rail head, said frame having outer rail gripping means and embodying a frame portion intermediate said means and said drill carrying base provided with inner rail head gripping elements pivotally mounted therein for movement toward the rail, and a camming device operatively mounted in said portion for actuating said elements.

2. In a rail drilling machine, the combination of a frame comprising side members and having oppositely disposed inner and outer rail gripping elements, the inner gripping element being mounted in said frame for movement to take up an operative rail head engaging position, a cam device for actuating said inner gripping element and having a shaft extending through one of said side members, and an operating lever therefor terminally mounted on said shaft at one side of said frame.

3. In a rail drilling machine, the combination of a frame having an outer rail gripping element, a movable inner rail gripping element and an independently movable camming element therefor disposed rearwardly thereof, said frame formed with bearings for both of said movable elements, and said camming element provided with a shaft extension, and an operating lever for said camming element mounted on said shaft extension.

, 4. In a rail drilling machine, the combination of a frame embodying side frame members disposed at right angles to the plane of the rail and adapted to engage the outer face of the rail, an inner rail gripping element and a co-acting camming element therefor, said elements provided with shafts Jourhaled in said side frame members and having their axes disposed in substantial parallelism with the plane of the rail, said camming element constructed and arranged to engage the other said element at a point below its axis, and means for operating said camming element.

5. In combination with the drill carrying base of a rail drilling machine, of a frame extending forwardly of said base tostraddle the rail head, said frame having outer rail gripping means and an inner rail gripping element movably mounted therein for movement toward the rail, a rearwardly disposed actuating member for said inner rail grippingelement capable of operatively advancing said element to rail gripping position, said frame formed with an extended bearing for said member and within which said member is adjustably mounted in juxtaposition with said inner gripping element.

6. In a rail drilling machine, the combination of a base, a frame extending therefrom and comprising an outerv rail engaging portion and an inner frame portion embodying side members provided with bearings, a rail head gripping element and an actuating element adapted to engage said gripping element, said elements integrally provided with co-active cam faces and with shafts mounted in said bearings, and a lever mounted on the shaft of the actuating element and having its free end extending from said side members toward said base.

7, In a rail drilling machine, the combination of a base, a frame extending therefrom to engage the outer side of the rail and embodying connected side members provided With bearings,- an inner rail head gripping element mounted in said bearings and constructed for operative movement on an are intermediate said side members, an actuating element for imparting movement to said rail gripping element and independently mounted in said side members, and an operating member mounted on said actuating element and extending from said side members in a direction toward said base.

8. In a rail drilling machine, the combination of a frame adapted to straddle the rail head and provided in its outer portion with an outer rail gripping element and in its inner portion With a pivotally mounted inner gripping element formed on its front face whereby to engage the inner side and under faces of the rail head there being a frame portion intermediate said elements adapted to rest upon the head of the rail, and actuating means movably mounted in the inner portion of said frame and adapted to rearwardly engage said inner gripping element and force the same to its operative rail head position, the pivotal line of said inner gripping element being disposed in a plane above that of the under face of said intermediate frame portion.

In testimony whereof I have hereunto signed my name to the foregoing specification.

WALTER C. DYER.

Copies of this patent may be obtained for five cents each, by addressing the Commiesioner of Ratemtt, Washington, I). G." 

